Stator for a line-start electric motor
AssigneeDanfoss Compressors GmbH
InventorNiels Christian Weihrauch
Life of this patent
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Abstract
The invention concerns a stator for a line-start electric motor, with a rotor accommodating chamber, in which a rotor is accommodated to be rotatable, and which has accommodating chambers for conducting rods and accommodating chambers for permanent magnets, and with a stator winding comprising several windings, which, during operation of the line-start electric motor under the influence of the rotor, generate a magnetic field with a main axis. In order to increase the efficiency of the line-start electric motor, the rotor accommodating chamber has no constant inner radius, but, in the area of a vertical to the main axis, has a larger inner radius than in the adjacent areas.
Claims17
A stator for a line-start electric motor, with a rotor accommodating chamber, and with a stator winding comprising several windings, which generate a magnetic field with a main axis, wherein the rotor accommodating chamber in the area of a vertical to the main axis, has a larger inner radius than in the adjacent areas, such that an amplitude of a harmonic frequency of a magneto-motoric force is reduced in comparison with a circular rotor accommodating chamber.
A stator for a line-start electric motor, with a rotor accommodating chamber, and with a main stator winding comprising several windings and generating a magnetic field with a main axis, which is arranged to be vertical to an auxiliary axis of a magnetic field, which is generated by an auxiliary stator winding comprising several windings, wherein the rotor accommodating chamber in the areas between the main axis and the auxiliary axis has a larger inner radius than in the adjacent areas, such that an amplitude of a harmonic frequency of a magneto-motoric force is reduced in comparison with a circular rotor accommodating chamber.
Dependencies are inferred from the claim text.